Trolley.



PATENT@ JULY 24, 190e. .GRUNDL.

TROLLEY APPLIUTIOR FILED DEO. 1L 1905.

INVENTUR Joan GRIIZIBL Avonusvs UNiTED srarnwsgrn'rnnfr onrron JOHN Gerson or infr'rsnono, PENNSYLVANIA.

No, 826.7482. Speccation ofV latent.

Patented July Q4, 1908. epatica nai Desaster 1i',Y ies'sesnrg. 291,244.

trated the upper` end of a trolley-pole i, carrying a conventional form of harp 2 in which is mounted a pin or bolt 3, having journaled thereon Within the harp a conventional `form of trolley-wheel 4.

My invention resides in a noveli attach- .io att ywhom t may concern:

Be it known that I, JonN GRNDL, a citi'-V` zen of the United States of America residing at Pittsburg, in th'e county of Allegheny and State of Penne lvania, have invented certain new and usefu Improvements in Trolleys of which the following is a specification, re erence being had therein to the mcwmpanyingV drawin s.

This invention relates torcertainneiv and uscul improvements in attachments for trolley-har s; and the invention has for its primary o ject the provision of novel means in connection with a trolley-harp for retainin the trolley-wheel of said harp upon the tro ley-wire or electrical conduit over which it travels.

Another oogcct of this invention is to ro vide a novel form of attachment for tro eyv harpe which will insure a perfect engagement of a trolley-Wheel with a trollo -Wirc, and in this connection I have devise novel means in connection with my improved attachment for preventing the same from interferin with the overhead construction of electrical? operated cars.

The attachment is constructed wherehyit l can be easily and uickl operated to With-V `,draw the trolley-w eel in connection with 3o which it isused from aAtroll'ey-Wire also novel means for normally retaining the attachment in a fixed position relative to the harp and wheel with which it is used.

With the above and other objects in view, which will more readily appear asrtli nature of the invention is better understood,' the 1e. same consists in the novel construction, corn- To normall old the blocks 12 12 in enbination, and arran ornent ci parte to he ga Vement wit one another, whereby Vthey hereinafter morejugy described and then wi span the trolley-wheel, U-sha ed springs specifica-llyointed outinthe claims, and, re- 17 are mounted upon the ends o thein or/ 'ferring to t e drawings accorrpanyin this bolt Sisaid springs entendingupyvardy and application, like numerals of re erence eignate corresponding parts throughout the several views, in Whichy Figure 1 is a bottom lan of a trolley-board used 1n connection wit bridges under which a trolley-wire extends. Fig. 2 is a side elevation of the same. Fig. 3 is a bottom plan of my improved attachment as applied to a trollefy harp and Wheel. Fig. 4 is a side elevation o the same. Figx is a longitudinal sectional viewr of a trolley harp and wheel, illustrating the same in connection with the trolley-hoard illustrated in Figs. v1 and 2 of the 55 drawings. D.

In the accompanying drawings I have illus- 2 and mount upon the outer ends of the pin or bolt 3, this pin or holt 3 being slightly longer than the ordinary pins or bolts used at resentV Vorder Yto' accommodate the memers 5 5 of my im roved attachment. Each member is provi YVedY with outwardly-extend ing pierced arms@ 6, and between the-outer ends ofY seid arms are mounted transverse rods Z 7l VVfcnunaled upon the rods 7 f are hard-nibher rollers S 8, the obeot of which will he'presentl; described. ach lmember directly above t e ends of the pin or bolt 3 is provided Withpierced lugs ed between these Vlugs b plus 11 11 oolocics l2 12.V acli block is angular in crosssection and has its up er edges hevsledinvrardly, as at 14, in or er that when the blocks lie in engagement with each other, as clearly illustrated 1n Fi 3 of the drawings, :YV-shaped entrances will e formed between zo 9 9 9, and mount- 10 1G are lugs will be resently desc 'bed ch block is provisie...

f 5W 'ohja rod (not shown) may ce attached to permitof'th YYblocks i2 12 being swung outrwar'dly, this being accomplished bypulling upon V1the 'stirru To normally retain the .attachment in one osition relative to the trollo -pole and harp, lJ form the roller nearest-,t e trolley-pole 1 `:in two parte and' meent a curved arm or wire 18 upon Vthe rod between the two parts of the roller. hearm or Wire 8 extends rearwdrdiytowadfthe pole 1 a lug lefc'arried by the ole 1, the end of wire bein Yprovided wi a head 20, and interposed YYe'tvveen said head and the lug 19 is a coiied spring 21, which is adapted to return the attachment to its'normai position` when the same has been moved therefrom.

5o and passes throuh t e the and@ tf the blocks, the cbstsr which Evith an outvvardiy-elrrt/erjigl1-ing.'de-V pending arm 15 the free ends of said arinshe- 1 connected together by a stirrnp', toV

' ment Which I use in connection V'vvithtlie harp engaging the outer vertical faces of the blocks ros IXO

In Fig. 5 of the drawings I have illustrated a trolley-board 22, such as is ordinarily used under bridges for conveying a trolley-wire. The board 22 carries a depending rib 23, which supports a rod 24, to which a trolle wire is attached upon entering beneath t e bridge and leaving the same or at' each end of a tunnel, as the case may be. B referring to Fig. 5 of the drawings it wil be observed that the blocks 12 12 extend upwardly upon each side of the board, engaging the sides of the rib 23 and retaining the trolleywheel 4 in engagement with the rod 24. When in this position, the'rollers S travel upon the rod and normally retain the attachment in a horizontal position relative to said rod and the board 22. This is also true in connection with an ordinary trolle -wire, the rollers 8 8 engaging-said trolley-wire and preventing the attachment from swinging when in use, which might occasion the blocks 12 12 to separate and permit of the trolleywheel becoming disengaged from its electrical conduit or wire. I have provided the blocks 12 12 with V-shaped entrances in order that the blocks may be easil separated when passing onto the rib 23 o the board 22, also when passing wire han ers and the like obstructions, the springs 17 icing adapted to return the blocks to their normal position imniediatel after such obstructions have been passe I preferably construct my improved trolley attachment of strong and durable metal w ich will withstand rough usage to which suchattachments are sub]ected.

It will be noted that various changes in the construction and operation of m im roved attachment as are permissible y t A`e ap- 4pendedcl'aims may be resorted to without departing from the spirit and scope of the invention.

What I claim, and desire to secure by Letters Patent, is-- 1. In a trolley, the combination with the harp carrying an axle having its ends extending beyond the sides of the harp, of plates mounted on said extended ends and having eeeyrsa arms projecting in opposite directions therefrom, a roller journaled in the outer ends of one pair of arms, a rod mounted in the outer ends of the other pair of arms, a two-part roller on said rod, a curved arm connected to said rod and provided on its outer end with a head, a lug through which said curved arm moves, and a spring on the arm between the head and said lug, lugs carried by said plates, trolley-wire-retaining blocks having lugs pivoted to the aforesaid lugs on the lates and having inwardly-curved portions ying over the trolley-wheel, bow-springs mounted on the extended ends of the axle and having their free ends bearing against the outer face of said blocks, depending arms carried lby said blocks, and a stirrup connecting the free ends of said depending arms, substantially as described.

2. In combination with a trolley-pole, a har thereon, an axle mounted in the harp an having its ends extended beyond the `sides thereof, and a trolley-wheel mounted on said axle, a pair of plates mounted one on each end of the extended axle, each plate provided with arms extending in opposite dlrections therefrom, a rodmounted in the outer end of one pair of arms, a roller on said rod, a rod mounted in the outer end of the other pair of arms, a two-part roller on said lastmentioned rod, a curved arm connected to said last mentioned rod and extending through a lug on the trolley-pole, trolleywire-retaining blocks pivotally attached to said plates and having curved portions overlying the trolley-wheel, bow-springs mounted on the extended ends of the axle and having their free ends bearing on the outer face of said blocks, and means-connected to the free ends of said arms to move said free ends toward each other, as and for the purpose described. f

In testimony whereof I aiix my signature in the presence of two witnesses.

JOHN GRNDL. Witnesses:

K. H. BUTLER, W. C. Hnrrz. 

